Joseph i



Patented NOV.. 19, 1889.Y

1.1. C. CLARKE.

I l xR/Mw W |i| m a. m ,ZC /W 7@ m W/M m J l-, l .1 m N Y INTERGHANGEABLE PLATE POR STERBOTYPE FORMS.

(NoModel.)

UNITED ,STATES PATENT l OFFICE.

JOSEPH I. O. CLARKE, OF NET YORK, N. Y., ASSIGNOR OF TlVO-THIRDS TO FERDINAND WIESEL AND DAVID M. OVIATT, OF SAME PLACE.

INTERCHANGEABLE FLATE FOR STEREOTYPE-FORMS.

SPECIFICATION forming part of Letters Patent No. 415,615, dated November 19, 1889.

Application tiled July 24, 1888x Serial No. 280,860. (No model.)

T all whom it may concern.-

Be it known that I, JOSEPH I. C. CLARKE, ot' the city, county, and State of New York, have invented certain new and useful Improvemcnts in Interchangeable Plates for Stereotype-Forms, of which the following is a specification.

This invention relates to stereotype-plates having interchangeable name or edition plates, whereby different editions of the saine paper can be quickly print-ed from the saine stereotype-plate.

The object of the invention is to provide a simple means for lholding the edition or name plate and facilitating its exchange.

In the accompanying drawings, Figure 1 represents a form with a page of a newspaper locked in the same, showing the typehigh dummy. Fig. 2 is a side view of one of the side gages used in the mold for casting the stereotype-plate, showing a projection on the side of the gage. Fig. 3 is a vertical transverse section of a mold for casting the stereotype plate, showing the side gages, either of which may be furnished with a projection for making a recess in the plate. Fig. i is a perspective View of a stereotyped pageplate ready to be placed in the press, showing the recess. Fig.` 5 is a detail front View 3o ot the detachable name or edition plate used in connection with the stereotype-plate; and Figs. 6 and 7 are respectively a vertical transverse section on line a, Fig. 7, and a front view of the stereotype-plate with interchangeable name or edition plate, drawn on a larger scale and illustrating', in connection with Figs. 1 and 4;, my improved method of making stereotype printing-plates with interchangeable name or edition plates.

Similar letters of reference indicate corresponding parts.

In carrying out my invention, the front or other page of a newspaper which is to be printed in several editions is set up and locked in a form in the usual manner, it being provided at the head or other suitable point with a type-high piece or dummy b, so as to produce thereby an impression in the pulp-matrix made from the form and a recess h of corresponding size in the stereo- 5o type-plate cast from the same. The pulpmatrix is next made from the front page, the dummy inaking an impression at the point where the change in the stereotypeplate is to be made. rIhematrixis then transferred to a mold of the usual construction and'retained by side gages d d, Figs. 2 and 3, one or both side gages being provided with a projection (Z, which corresponds in slze and shape with the impression made 1n the 6o matrix by the dummy b. The-stereotypeplae is then cast in the mold, the recess li' being formed at that point where the projection d of the side gage d is located, said recess serving for receiving the interchangeable naine or edition plate N, as shown in Fig. 5.

The name or edition plate N is provided with a shank n, which is retained by the margin-bar E on the type-cylinder, as shown 7o in Figs. G and 7. The margin-bar E is provided with a recess e, which corresponds to the size of the shank n of the plate N. When an edition is printed, the plate N is removed and another plate N, representing the second or other edit-ion plate, is inserted and secured on the type-cylinder by the marginbar. Suitable fasteners-such as screwsserve to secure the margin-bar E to the typecylinder. The next edition is then printed 8e and afterward the name or edition plate changed again, another edition printed, and so on, as many changes being made in the plates at the heading or other suitable point of the changeable name or edition plate 'having a In testimonythatI Claim the foregoing as my laterally-extending shank of less thickness invention I have signed my name in presence than the body of the changeable plate, a of two subscribing witnesses.

margin-bar for holding said changeable plate, y J OSEPH I. C. CLARKE. 5 provided with a recess adapted to receive Iitnessesz said shank, and fasteners for seem-ing said EDWIN T. JONES,

bar to said cylinder. l ALBERT E. Woon. 

